| Cosmic Crystal Games | Developer | |
| Cosmic Latte | Developer | |
| Cosmic Misfit Drew | Developer | |
| Cosmic Picnic | DeveloperPublisher | |
| Cosmic Trench | Developer | |
| Cosmic Turtle | Developer | |
| Cosmic Visual | Developer | |
| Cosmic Wheels | Developer | |
| Cosmic Wolf | Developer | |
| CosmicAlbacore | Developer | |
| CosmicLatte_ | Developer | |
| CosmicNeanderthal | Developer | |
| CosmicNobab | Developer | |
| CosmicVoid | Developer | |
| Cosmicraft | Developer | |
| Cosmigo | DeveloperPublisher | |
| Cosmium | Developer | |
| Cosmo D | Developer | |
| Cosmo Myzrail Gorynych | Developer | |
| CosmoArt | Developer | |
| CosmoJao | Developer | |
| Cosmocat | Developer | |
| Cosmonaut Collective | Developer | |
| Cosmos Computer | DeveloperPublisher | |
| Cosmoscope | DeveloperPublisher | |
| Cosmosis42 | Developer | |
| Costa Panayi | Developer | |
| Costia | Developer | |
| Costin | Developer | |
| CottenGame | Developer | |
| Cotton Game | Developer | |
| Cotton Games | Developer | |
| CottonCandyCyanide | Developer | |
| CottonGame | Developer | |
| Cottonmouthgamestudio | Developer | |
| Couch Knight | Developer | |
| Couch Monster | DeveloperPublisher | |
| CouchSpring | Developer | |
| Couchlyntt | Developer | |
| CountArchos | Developer | |
| CountMoxi | Developer | |
| CounterParry | Developer | |
| CounterWiddershins | Developer | |
| Courtney | Developer | |
| Courtney Chavez | Developer | |
| Cous | Developer | |
| CoutalGames | Developer | |
| CovalentBonds | Developer | |
| Coverttrickster | Developer | |
| Cow | Developer | |
| Cow Legs | Developer | |
| CowCat | DeveloperPublisher | |
| CowMan9999 | Developer | |
| CowThing | Developer | |
| Cowardly Creations | Developer | |
| CowboyColor | Developer | |
| Cowcat | DeveloperPublisher | |
| Cowgummiboy | Developer | |
| Coxyworthy | Developer | |
| CoyadoDev | Developer | |
| Coyote | Developer | |
| Coyote Console | Developer | |
| Coyote Crow Games | Developer | |
| Coyote Developments | Developer | |
| Coyote Developments Ltd | Developer | |
| Coyote Games | Developer | |
| Coyroski | Developer | |
| Cozy Game Pals | Developer | |
| CozyKuma | Developer | |
| CozyStorm | Developer | |
| CptBlackPixel | Developer | |
| CptFinn | Developer | |
| CrabGang | Developer | |
| Crabie | Developer | |
| Crabman | Developer | |
| Crack Dot Com | Developer | |
| CrackSloth | Developer | |
| CrackedGhostGames | Developer | |
| Cracked_Walnut | Developer | |
| Crackmaniak | Developer | |
| Crackpot Entertainment | Developer | |
| Crackshell | Developer | |
| Cradle Games | Developer | |
| Craedon | Developer | |
| Craft | Developer | |
| Craft Egg | Developer | |
| Craftman (video game developer) | Developer | |
| Crafts & Meister | Developer | |
| Craftven | DeveloperPublisher | |
| Crafty Studios | Developer | |
| Cragworks | Publisher | |
| Craig Carlson | Developer | |
| Craig Galley | Developer | |
| Craig McNaughton | Developer | |
| Craig P | Developer | |
| Craig Roth and David Stark | Developer | |
| Craig Tinney | Developer | |
| CraigsArcade | Developer | |
| Crait | DeveloperPublisher | |
| Crambles | Developer | |